JPS6240796A - Hot wire inserting/withdrawing system - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Application of the Invention] The present invention relates to a device that takes a maintenance method of inserting and removing a logic card while the device is in operation, particularly during insertion and removal.

Signal and power supply are automatically controlled and installed by insertion and removal.

This invention relates to a hot-swap system that does not adversely affect the system.

[Background of the invention]

Generally known hot insertion/removal methods include a method in which the connection/disconnection order of signals, power, and ground is controlled by changing the length and shape of the logical card connector; Poor contact may occur due to slight vertical movement or misalignment of the logic card, or distortion of the board.
Element corruption and signal disturbance occurred. Furthermore, precision machining of the length and shape of the logic card connector was required. Furthermore, in the method described in Japanese Patent Application Laid-Open No. 52-12460, an external power supply cable must be attached before insertion and removal 1, requiring the operator's attention.

[Purpose of the invention]

An object of the present invention is to provide a highly reliable system that does not require structural precision or the utmost care and skill on the part of the operator, and that automatically controls power, ground, and signals when a logic card is inserted or removed. The purpose is to provide a wire insertion/extraction method.

[Summary of the invention]

In order to achieve the above object, the present invention utilizes a guide rail that correctly guides a logic card to a connector on a backboard, and has a structure that can supply power and ground to the logic card inserted into the guide rail. The present invention is also characterized by having a structure for cutting off the output signal of the logic card.

[Embodiments of the invention]

Hereinafter, one embodiment of the present invention will be described with reference to FIGS. 1 to S.

FIG. 1 and FIG. 2 show the configuration of a general backboard and an example of mounting a logic card. Usually backboard 1
A guide rail 2 is fitted so that the plug of the logic card 4 can be correctly inserted into or pulled out from the upper connector 5, and does not come into contact with the logic cards already installed on the left and right sides and cause a short circuit. In other words, logic card 4 is backboard 1
When the logic card 40 is mounted on a computer, both sides of the logic card 40 must be placed in the grooves of the guide rail 2.

In the present invention, power supply and ground electrodes are provided inside one or both of the upper and lower grooves of the guide rail 2, and the guide rails are provided at the portions that contact the grooves of the guide tray/I/2 on both sides of the logic card 4 to be inserted or removed. Pay 1 from 2! Provide electrodes for (power supply and ground). FIG. 5 shows the structure of the guide rail electrodes and the logic card electrodes.

Electrodes 5 and 6 of the guide rail 2 serve as a ground and a power button, respectively. Further, electrodes 7 and 8 on the logic card 4 are connected to the ground and power supply in the logic guard, respectively. Further, the electrode 9 is an M-coffin for generating a control signal for cutting off the signal output from the logic card 4 to the backboard 1, and when this is connected to the electrode 6, the signal output from the logic card 4 is cut off. . If the logic card 4 is suddenly inserted into the connector 5, the stray capacitance of the connector 5 may cause VC disturbance to other logic cards 4 via the backboard 1. The electrode 9 is a device to prevent this. (α) → (h1 → rc) → (d) in Figure 3
indicates the sequence when the logic card 4 is inserted, and conversely, (ji→(c1→(A)→(α)) indicates the sequence when the logic card 4 is removed.

To explain the sequence at the time of insertion, (as the α1 logic card 4 is inserted along the guide rail 2 in the direction of the ZF connector 5, the ground electrode 5 of the guide rail 2 and the ground electrode 7 of the logic card 4 are connected, and the logic The ground level within card 4 is guaranteed.

(h) When the logic card 4 is further inserted, the power supply electrode 6 of the guide rail 2 and the power supply electrode 8 of the logic card 4 are connected, and power supply voltage is supplied to the inside of the logic card 4. When further inserted, the output signal of the logic card 4 to the backboard 1 is cut off, and the separated electrode 9 and the power source 1 pole 8 of the guide rail 2 are also connected, and the output signal to the backboard 1 is cut off.

(c) When the logic card 4 is further inserted, the plug of the logic card 4 and the connector 3 are connected.

(d:I When the logic card 4 is inserted enough, the logic card 4
The electrode 9 that cuts off the output signal to the backboard 1 and the power supply electrode and pole 6 of the guide rail 2 are separated, and the output signal of the logic card 4 is connected to the signal of the backboard 1.

The above is the sequence when inserting the logic card 4, but when the logic card 4 is pulled out, the electrodes are connected/disconnected in the sequence of (me → (Q) → (b) → (α)), and the backboard of the logic card 4 The output signal to 1 is also controlled, which prevents disturbance of signals of other logics, and also ensures prevention of destruction of logic elements.

The reason why the ground electrode 5 and the power supply electrode 6 of the guide rail 2 are shifted is to prevent the guide rail 2 from being deformed by some mechanical action and causing a short circuit between the electrodes 5 and 6.

〔Effect of the invention〕

According to the present invention, when a logic card is inserted or removed, it is possible to automatically control the connection/disconnection of the power supply and ground and the output signal from the logic card to the backboard, thereby preventing signal disturbance or destruction of logic elements during hot insertion or removal. This has the effect of providing high reliability for 24-hour operation of the device.

[Brief explanation of drawings]

Figure 1 is a perspective view of a typical backboard, Figure 2 is a side view showing a logic card mounted on the backboard connector, and Figure 5 is a connection/disconnection of each electrode when inserting/removing a logic card. FIG. 3 is a diagram showing a sequence. 1: Backboard, 2: 1 guide rail, 5: Connector. 4: Logic card, 5 Nigerland electrode, 6: Power supply electrode, 7: Electrode (connected to the ground inside the logic card), 8: (
9: Electrode (connects to the power supply in the logic card); 9: Electrode (controls the signal output from the logic card to the backboard). Representative baseball player patent attorney Ogawa R? tfA 1st mouth 3rd mouth

Claims (1)

[Claims] 1. In a logic card hot insertion/removal method in which the logic card moves along a guide rail while power is turned on and is inserted/extracted from a connector connected to a backboard, the internal power supply is removed. The guide rail is provided with an electrode to supply and an electrode to supply a ground level, and the first electrode and the ground level are arranged so as to be in contact with the ground electrode so as to initially receive the supply of the ground level upon insertion. a second electrode arranged so as to be in contact with the power supply electrode to receive the power supply after receiving the supply of the power supply
and the logic card provided with electrodes. 2. The logic card is in a state after receiving the ground level supply and the power supply and before sending an output signal to the backboard, and a control for suppressing the output signal. 2. A hot-swap system according to claim 1, further comprising a fifth electrode placed in contact with said power supply electrode to generate a signal.